Carcass wrote:
If 5x2+65x+60x2+10x−24=5x+5x−2 then which of the following are possible values of x?
Indicate all such values.
A. − 60
B. − 12
C. − 1
D. 1
E. 2
F. 5
5x2+65x+60x2+10x−24=5x+5x−2.......(5x2+65x+60)∗(x−2)=(x2+10x−24)∗(5x+5).........5(x2+13x+12)∗(x−2)=(x2+10x−24)∗5(x+1).........(x+12)(x+1)∗(x−2)=(x+12)(x−2)∗(x+1)so LHS=RHS therefore all values of x are possible except when the denominator becomes 0....
1) x-2=0 means x=2
2)
x2+10x−24=0........x2+12x−2x−24=0....(x+12)(x−2)=0 so x can be 2 or -12
combined x should not be 2 and -12 and rest of the values are possible.
Thus A, C, D and F